Incremental and/or successive adjustable mandibular advancement device for preventing and treatment of snoring and obstructive sleep apnea

ABSTRACT

The current invention relates to an adjustable mandibular advancement device with a unique combination of resilient hinging, dentition engagement and adjustability, to prevent or reduce Snoring and/or Obstructive Sleep Apnea Syndrome. The adjustability is described by means of two concepts of adjustability for the relative enlargement or diminution of the members of the device, incremental and successive advancement mechanisms, in either combination or separately. By use of thermoplastic materials the device can be used in the outmost variability of the human dentition.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims benefit of Denmark Patent Application Number PA 2013 00338 filed Jun. 2, 2013. All subject matter set forth in Denmark Patent Application Number PA 2013 00338 is hereby incorporated by reference into the present application as if fully set forth herein.

FIELD OF INVENTION

The current invention relates to an adjustable mandibular advancement device which by virtue of either an incremental (stepwise) or a successive (continuous) mechanism, advances the mandibular relative to the maxilla in order to prevent or reduce Snoring and/or Obstructive Sleep Apnea Syndrome (OSAS) during sleep.

BACKGROUND OF THE INVENTION

Snoring and Obstructive Sleep Apnea are generally known today as the same disease on a continuum of the sleep disorder severity scale. Starting at the modest degree of snoring ending in the fulminate obstructive sleep apnea condition, is known as a fact.

As the disease is closely related to a large variety of physical and mental conditions, treatment is of outmost importance as soon as possible.

Whereas the snoring condition is characterized by the sounds developed by vibrating tissues in the most dorsal area of the pharynx, either the nasopharynx, or the oropharynx or the laryngopharynx, the obstructive sleep apnea is characterized by actual respiration arrest caused by occlusion of the pharyngeal airways.

Apnea appears when the upper airway passages are being sucked close to the rear part of the throat when the person is trying to breathe during sleep. The occlusion can be the result of suction or by the lapse of tonus in the oral soft tissues during the relaxed sleep condition.

When the occlusion is there, no air is passing through the pharynx and down to the lungs, and this is the situation called OSAS (Obstructive Sleep Apnea Syndrome).

The obstruction can happen as often as 1000 times during the night time sleep in which the body is depraved from oxygen uptake from the air into the blood stream, which eventually leads to the aggravated symptoms.

The severity of OSAS has been described in the medical literature numerous times giving cause to a number of symptoms and diseases:

General headache High blood pressure

Diabetes

Hypoxic pulmonary vasoconstriction

Cardiomyopathy

Pulmonary hypertonia with cor pulmonale (increased pressure in the heart-lung circuits) Heart failure, heart arrhythmia, heart attack Day time melancholy or depression Intelligence alterations

Add Reflux (GERD—Gastro Esophageal Reflux Disease)

Potency disturbances Worsening of ADHD (Attention deficit hyperactivity disorder), in addition to a large number of problems of a more social character, like, e.g., divorce, decreased labour activity, difficulties in keeping conversations in the track due to tiredness, etc.

Thus, compared to a normal control group without diseases, patients suffering from snoring and/or OSAS appear to have: three times as many cases of coronary heart diseases, four times as many cerebral illnesses, such as clots, twelve times as many incidents of car accidents and twice as many labour accidents due to day time sleepiness as a result of lack of sleep and/or impaired sleep quality.

Due to these conditions the life time expectancy is severely limited for these patients, and their quality of life is compromised.

The continuum of snoring diseases gives the following frequency figures:

-   -   40% of adults over 40 snore (approx. 87 million Americans)     -   9% of men and 4% of women suffer from some form of OSAS (approx.         30 million Americans)     -   Less than 10% of OSA sufferers have been diagnosed (Approx 3         million Americans)     -   Of those, less than 25% have been successfully treated.

For the above reasons, it is important to provide devices to eliminate and prevent apnea and the incipient stages thereof.

In the prior art, a number of surgical techniques for removal of the tissue involved in the obstruction have been developed, but all of these techniques seem to incur a certain invalidation of the patient and, at the same time, do not have a fully predictable effect.

Furthermore, a number of medical treatments have been tried out with predominantly deficient or sometimes even damaging effect.

Finally, the scientific literature and the patent literature disclose numerous devices for alarming the snoring patient during sleep; devices for tongue thrust, devices for forward movement of the soft palate; devices for obstructing the oral cavity (delimited by the lips), thereby engaging the sound from the snoring; furthermore, mandibular advancement splints or appliances, mouth guard-like devices for provocation of either tongue, hyoid bone or jaw position changes, thereby eliminating snoring; —all of these requiring active participation from competent professionals, such as medical doctors, dentists, etc. Among such prior art devices for or attempts to inhibit snoring, the following are of particular interest in the present context:

EP 0 794 749 B1 discloses a jaw position-regulating oral device for preventing snoring and obstructive sleep apnea during sleep. The device consist of two members, a first member to engage with the maxillary dentition and a second member to engage with the mandibular dentition, both connected by a resilient hinge. The mechanism is embedded in the mandibular advancement relative to the maxilla.

WO 2013/032 884 A1 discloses a mandibular advancement device with an upper and lower member to engage the maxillary and mandibulary dentition respectively. The lower tray assembly is mated to and slidably adjustable by the patient relative to the upper tray assembly.

WO 2009/062 541 A1 discloses a mandibular advancement orthosis in which the device the comprises a unitary flexible member that can be folded on itself for interaction with the teeth of the upper and lower arches, and an interchangeable flexible strip for surrounding the teeth of the upper arch, having a length that can be modified in order to obtain the desired level of mandibular advancement.

US 2009/0014 013 A1 discloses a mandibular advancement splint made of two thermoformable trays designed to envelop the upper and lower arch. The advancement splint includes an articulated frame having rigid and flexible elements immersed in the thermoformable flexible material or molded around it.

EP 1 719 481 A1 discloses a mandibular advancement device with a lateral link incorporated into a mandibular protrusion device comprising an upper dental tray and a lower dental tray so as to advance or retract the lower dental arch during a vertical movement between the two. The link is adapted to be detachably accommodated in an opening of a ball pivot.

EP 2 529 710 A1 discloses a device for mandibular advancement in which an upper member and a lower member are interconnected by means of pivotable connection in which at least one is formed as a stud.

CA 223 650 3 A1 discloses a mandibular advancement device which uses elastic bands to pull the jaw forward. The upper part having a set of retention hooks and the lower part having a set of interchangeable slide-in posterior occlusal bite planes.

WO 2008/130 413 A1 discloses a mandibular advancement device for pulling the lower jaw forward composed of an upper and a lower member to engage the dentition, where a ball type of hook support is located on both sides of the upper tray at a forward position and a ball type of hook supports are located at a rearward position of both sides of the lower jaw. A tension coil is attached to each of the upper and lower ball type of hook supports.

WO 2011/115 962 A1 discloses a mandibular advancement splint made of two trays designed to envelop the upper and lower arch. The upper appliance has a pair of adjustable wings attached to the body, and the lower has a pair of fixed wings attached to the body. The upper wings are slidable adjustable.

US 2010/004 380 5 A1 discloses a mandibular advancement device with an upper and lower member to engage with the dentition of the human. The lower dental plate having two pairs of spaced apart pillars and two removable attachable horizontal displacements inserts on the upper part.

GB 2 264 868 discloses an anti-snoring device for oral use, comprising members having upper and lower surfaces which engage the user's maxillary and mandibular dental arches respectively. The upper and lower surfaces are spaced so that the mandible is placed in a forwardly offset position relative to its normal position. The spacing also tensions the masticatory muscles to maintain the device in place.

US 2011/001 722 0 A1 discloses a self-titratable mandibular repositioning device that allows for adjusting the maintained forward position by simply biting-down to preserve the desired degree of mandibular advancement, made of a lower and an upper member to engage the dentition.

US 2008/011 579 1 A1 discloses a mandibular advancement device with an intraocclusal removable device in the form of a “U” that is placed covering the all of the upper jaw teeth, wherein two steps, one in each extreme of the lower part of the element, which impede the mandible be closed completely on its normal occlusion, forcing it to produce a forward displacement of the lower jaw.

US 2005/023 600 3 A1 discloses a mandibular advancement device as a single piece of molded plastic with said unit modeled from four theoretical positions including a shield like anterior portion fitted and anchored between anterior teeth-gums and behind the lips.

US 2010/030 045 8 A1 discloses a mandibular advancement device with an upper and lower member to engage with the dentition of the human. The members are including a cam associated with one of the jaws and a follower associated with the other jaw.

US 2008/009 902 9 A1 discloses a mandibular advancement device composed of a maxillary main body for removable attachment to the maxillary teeth with a protrusive element extending from the central portion of the body and a mandibular removable appliance attached to the mandibular anterior teeth.

EP 2 491 901 A1 discloses regulatable intraoral mandibular advancement device for preventing snoring and sleep apnea in which a screw system is located in the central part of the connection between the upper and lower members for the engagement of the dentition.

AU 1999 476 15 B2 discloses a mandibular advancement device in which the upper jaw is firmly fitted into an upper plate and the lower jaw is firmly fitted into a lower plate, these two parts are connected by means of opposing flange components located to be lying in an area and close to the posterior teeth.

US 2013/001 476 5 A1 discloses a tongue and mandibular advancement device in which an upper member has hook supports anteriorly and a lower member has a plurality of hook support at the rearward position.

EP 0 337 201 discloses an orthodontic appliance comprising a first member to engage with the mandibular dentition and a second member to engage with the maxillary dentition. The two members are resiliently hinged together to keep the upper and lower jaw in a normal position.

WO 92/11827 discloses an anti-snoring device for oral use consisting of a horseshoe-like upper jaw member for engaging the maxillary dentition, with the downward extending flange intended to extend into the lingual vestibule in order to maintain a forward posture of the lower jaw.

EP 0 312 368 discloses an anti-snoring device for oral use which resembles the above-mentioned device, the main difference being the design of the airway passage.

WO 92/05752 discloses an anti-snoring device for oral use consisting of a spatial member congruent with the palate and a lower member adapted to the lingual aspects of the surfaces of the dentition in the lower jaw, hooks being attached to the occlusive plane of the device for fixing the two jaws in a predetermined relation.

U.S. Pat. No. 5,313,960 discloses an anti-snoring device for oral use consisting of two horseshoe-like individually shaped mouthpiece portions which are connected and fixed in a predetermined position in which the lower jaw protrudes in relation to the upper jaw.

DISCLOSURE OF THE INVENTION

While the above devices represent attempts to solve the snoring and apnea problems, they are all rather complicated in their design and most of these require the interaction of a professional team in their individual design. Furthermore, they are rather discomfortable for the wearer, and they do not appear convincing with respect to their capability of achieving an effective and long-lasting anti-snoring effect.

Thus, there is a demand for a relatively comfortable device which provides a high degree of inhibitory effect on snoring during even long sleeping periods, such as overnight, without adverse effects on the structures involved, and which at the same time is easy and simple to use and wear for normal non-skilled persons.

The present invention provides such a device.

The adjustable anti-snore device according to the invention comprises an upper member adapted to engage the maxillary dentition of a human and a lower member adapted to engage the mandibulary dentition of the human, the upper and lower members being resiliently hinged together, wherein the resiliency of the hinging is adapted to allow the physiological movement of the lower jaw in the sagital plane while retaining a forward position of the lower jaw relative to the upper jaw and thereby keeping the airway passage in the nasopharynx, the oropharynx and the hypopharynx substantially free of occlusion, while at the same time embody the adjustability in one or two form, i.e. incremental and or successive.

The device according to the invention combines three essential functions: the forward positioning of the lower jaw relative to the upper jaw, the resilient hinging, and the adjustability of the sagital relation between the two members. As will be explained below, the forward positioning of the lower jaw is essential to prevent occlusion of the airway passage in the pharyngeal space during sleep. The resilient hinging makes it possible and realistic to maintain the forward positioning of the lower jaw even during movements in the sagital plane which unavoidably occur during sleep. And the adjustability makes it useful for even the smallest and the largest person wearing the device. This essential combination of features which ensures constant non-constricted airflow and unrestricted movement in the sagital plane and thereby ensures a constant efficient function without risk of the device falling out of the mouth of the user and without any substantial discomfort together with the adjustability which even allows some horizontal movements distinguishes the device according to the invention from all of the above-mentioned prior art devices.

The device according to the invention may be made of any material, such as metal, alloy, wood, plastics, etc. provided that the device made feels soft and comfortable in the mouth without any constriction or damaging of the tissue, such as gums, tongue, teeth, but at the same time is sufficiently capable of retaining its shape and of exerting a sufficient resiliency towards the muscular tension and forces acted upon the jaws so that it will maintain the lower jaw in the anterior position while allowing normal movements during sleep. The material used for the device according to the invention should not contain any allergens or other kind of toxic ingredients.

The device according to the invention is preferably made of a resilient non-toxic plastics material, such as a polyvinyl resin, including a vinyl acetate-ethylene copolymer such as poly (ethyl vinyl acetate), or a polyolefin such as polyethylene or polypropylene.

It is particularly preferred that the resilient non-toxic plastics material is a thermoplastic material, such as a cellulose derivative, a vinyl polymer, a polystyrene, a polyimide, an acrylic resin, etc., which can be shaped to adapt to an individual dentition by moderate heating, such as heating to a temperature above normal human body temperature, that is, a temperature of at least 40° C. and at the most 80° C., e.g. about 70° C. The material presently most preferred by the inventor is ethylene vinyl acetate copolymer.

The device according to the present invention may be manufactured by plastics molding, such as cold molding, compression molding, injection molding, etc. The manufacturing method presently most preferred by the inventor is injection molding.

The upper and lower members are preferably integrated with each other through resilient hinges made of the same material as the upper and lower members. However, the hinges may be reinforced and their resiliency enhanced by insertion, such as cast in, etc., into the hinges of a resilient member, such as a resilient plastics member, a metallic resilient member, such as a flat spring, a laminated spring, etc., etc.

The adjustability according to this invention, being embedded or glued, gilded or otherwise attached to the membering parts for the engagement of the dentition, in the upper maxillary member, the lower mandibulary member or both members at the same time, being either incremental or successive is a major novelty and is unique for this device.

As it will be understood the adjustability is embedded in the anterior parts of the upper and/or lower members of the device thus keeping the resilient hinge intact.

The adjustability of the protrusion of the mandible relative to the maxilla is made adjustable by the means of embedding a positive structure in either the forward moving part or the device and a negative structure in the stable part of the device or vice versa. The positive part may be constructed as a knob, rod, hook or alike, whereas the corresponding negative structures would be holes, cylinders and loops in this aspect. Other configurations may apply. Thus depending on the structure selected, knob, rod or hook etc. the adjustability will express itself as either incremental (stepwise) or successive (stepless).

When the successive design is used, a special rod can be supported for the consumer that allows fixation of the desired position of the forwarded device. Said special rod and alike may be made of a heat conducting metal insulated with non-heat conducting hand piece, so as not to damage the fingertips of the user when heating the rod and penetrating the material of the invention at the desired position.

A particularly preferred way of shipping the device according to the invention to the end consumer is as a kit comprising the device and a temperature indicator adapted to indicate a temperature change to an elevated temperature at which the material of the device can be shaped. This makes it simple and safe for the end user to mold the device to conform to his or hers specific dentition simply by heating the relevant domain of the device in water at the temperature of which is kept in the correct temperature range for the material in question by using the indication of the temperature indicator.

It should be understood that the use of the anti-snore device according to the invention is not limited to prevention or reduction of snoring or OSAS but the device is applicable in any situation where it is desirable to secure free airway passage in human beings, such as during recovery from anesthesia, during unconsciousness, etc.

The unique combination of resilient hinging, dentition engagement and adjustability discussed above can also, according to another aspect of the invention, be utilized in a device for relieving guided transpositions of the jaws.

In this latter aspect, the invention relates to an orthognatic function device comprising an upper member adapted to engage with the maxillary dentition of a human and a lower member adapted to engage with the mandibulary dentition of the human, the upper and lower members having bases which prevent direct contact between opposing teeth, thereby eliminating guided transposition of the jaw relation and the upper and lower members being resiliently hinged together in such a manner together with the adjustability that the lower jaw of the human is kept positioned in a normal position relative to the upper jaw, allowing vertical movement and, in the occluded intercuspidal position, allowing horizontal movement so that the temporo mandibular joint is kept substantially in its resting position both when the lower jaw is at rest and when it is working.

It will be understood that also in this aspect, the resiliency of the hinging should be adapted to allow the physiological movement of the lower jaw in the sagittal plane, and that the above comments concerning selection of suitable materials, manufacturing method, and adaptation to the individual dentition by shaping the material in a softened, e.g. heat-softened, condition apply also to this aspect of the invention.

Thus, the orthognatic aspect of the invention provides a completely new philosophy in relieving temporo mandibular joint disorders caused by irregular dentition: In contrast to known orthognatic devices, the orthognatic device according to the invention is hinged in such a way that no interference between the upper and lower members can occur, thereby alleviating symptoms caused by abnormal interference from irregular dentition. Furthermore, tensions caused by tooth grinding and clenching are alleviated. At the same time, this orthognatic device is much simpler to adapt to the individual needs of the person in question than conventional orthognatic devices, and it can even be used by the individual consumer without assistance by any professional.

In the following, the incremental and successive mandibular advancement anti-snoring device aspect of the invention will be explained in further detail with reference to the accompanying drawings.

DESCRIPTION OF FIGURES

In the figures and drawings,

FIG. 1 a Shows the Incremental version of the Adjustable Mandibular Advancement Device top view in an oblique perspective in its Neutral position

FIG. 1 b Shows the Incremental version of the Adjustable Mandibular

Advancement Device bottom view in an oblique perspective in its Neutral position

FIG. 1 c Shows the Incremental version of the Adjustable Mandibular Advancement Device bottom view in a perpendicular perspective in its Neutral position

FIG. 1 d Shows the Incremental version of the Adjustable Mandibular Advancement Device top view in a perpendicular perspective in its Neutral position

FIG. 2 a Shows the Incremental version of the Adjustable Mandibular Advancement Device from aside in its Neutral position

FIG. 2 b Shows the Incremental version of the Adjustable Mandibular

Advancement Device in cross section at line A in FIG. 1 c in its Neutral position

FIG. 2 c Shows the Incremental version of the Adjustable Mandibular Advancement Device in cross section at line B in FIG. 1 c in its Neutral position

FIG. 3 Shows enlarged schematic details of he incremental mechanism with taps and corresponding holes

FIG. 4 a Shows the Incremental version of the Adjustable Mandibular Advancement Device top view in an oblique perspective in its maximal elongated position

FIG. 4 b Shows the Incremental version of the Adjustable Mandibular Advancement Device bottom view in an oblique perspective in its maximal elongated position

FIG. 4 c Shows the Incremental version of the Adjustable Mandibular Advancement Device bottom view in a perpendicular perspective in its maximal elongated position

FIG. 4 d Shows the Incremental version of the Adjustable Mandibular Advancement Device top view in a perpendicular perspective in its maximal elongated position

FIG. 5 a Shows the Incremental version of the Adjustable Mandibular Advancement Device from aside in its maximal elongated position

FIG. 5 b Shows the Incremental version of the Adjustable Mandibular Advancement Device in cross section at line A in FIG. 4 c in its maximal elongated position

FIG. 5 c Shows the Incremental version of the Adjustable Mandibular Advancement Device in cross section at line B in FIG. 4 c in its maximal elongated position

FIG. 6 a Shows the Incremental version of the Adjustable Mandibular Advancement Device in its four components top view oblique perspective

FIG. 6 b Shows the Incremental version of the Adjustable Mandibular Advancement Device in its four components bottom view oblique perspective

FIG. 6 c Shows the mandibular lower member to engage with the mandibular dentition of the Incremental version of the Adjustable Mandibular Advancement Device bottom view oblique perspective

FIG. 6 d Shows the maxillary upper member to engage with the maxillary dentition of the Incremental version of the Adjustable Mandibular Advancement Device bottom view oblique perspective

FIG. 6 e Shows the Hinge mechanism connecting the upper maxillary and lower mandibulary members of the Adjustable Mandibular Advancement Device in a bottom oblique view

FIG. 6 f Shows the mandibulary lower member to engage with the maxillary dentition of the Incremental version of the Adjustable Mandibular Advancement Device top oblique view

FIG. 6 g Shows the maxillary upper member to engage with the mandibular dentition of the Incremental version of the Adjustable Mandibular Advancement Device top oblique view

FIG. 6 h Shows the Hinge mechanism connecting the upper maxillary and lower mandibulary members of the Incremental version of the Adjustable Mandibular Advancement Device in a top oblique view.

FIG. 7 a Shows the single member adjustable Incremental version of the Adjustable Mandibular Advancement Device top view in an oblique perspective in its Neutral position

FIG. 7 b Shows the single member adjustable Incremental version of the Adjustable Mandibular Advancement Device bottom view in an oblique perspective in its Neutral position

FIG. 7 c Shows the single member adjustable Incremental version of the Adjustable Mandibular Advancement Device bottom view in a perpendicular perspective in its Neutral position

FIG. 7 d Shows enlarged schematic details of the incremental mechanism with taps and corresponding holes in just one of the members at line A-A in FIG. 7C

FIG. 8 a Shows the single member adjustable Incremental version of the Adjustable Mandibular Advancement Device top view in an oblique perspective in its maximal elongated position

FIG. 8 b Shows the single member adjustable Incremental version of the Adjustable Mandibular Advancement Device bottom view in an oblique perspective in its maximal elongated position

FIG. 8 c Shows the single member adjustable Incremental version of the Adjustable Mandibular Advancement Device bottom view in a perpendicular perspective in its maximal elongated position

FIG. 8 d Shows the single member adjustable Incremental version of the Adjustable Mandibular Advancement Device bottom view in a perpendicular perspective in its maximal elongated position

FIG. 8 e Shows enlarged schematic details in cross section at line A in FIG. 8 d of the incremental mechanism with taps and corresponding holes in just one of the members in its maximal enlarged position

FIG. 9 a Shows the single member adjustable Incremental version of the Adjustable Mandibular Advancement Device bottom view in an oblique perspective with detached members

FIG. 9 b Shows the single member adjustable Incremental version of the Adjustable Mandibular Advancement Device top view in an oblique perspective with detached members

FIG. 9 c Shows in detail the knob part of the incremental mechanism

FIG. 9 d Shows in detail the hole part of the incremental mechanism

FIG. 10 Shows a cross section of the griping mechanism in its maximum enlarged stage

FIG. 11 a Shows the Successive version of the mandibular advancement device in which a sliding system is indicated (the sliding system here is in the form of a “dovetail guide structure”). The device is seen from an oblique perspective from the bottom part

FIG. 11 b Shows the Successive version of the mandibular advancement device in an oblique perspective from the top part, in which a sliding system is indicated

FIG. 11 c Shows the Successive version of the mandibular advancement device in a perpendicular perspective, in which a sliding system is indicated with its maximum elongation

FIG. 12 a Shows the sectional drawing of the device at line A in FIG. 11 c at its maximum elongation at the midline of the device

FIG. 12 b Shows the sectional drawing of the device at line B in FIG. 11 c at its maximum elongation at the junction of the device members

FIG. 12 c Shows the sectional drawing at line C in FIG. 11 c in which the engaging mechanism can be seen, further in detailed insert

FIG. 13 a Shows the Successive version of the mandibular advancement device in which a sliding system is indicated (the sliding system here is in the form of a “dovetail guide structure”). The device is seen from an oblique perspective from the top in its detached situation

FIG. 13 b Shows the Successive version of the mandibular advancement device in which a sliding system is indicated (the sliding system here is in the form of a “dovetail guide structure”). The device is seen from an oblique perspective from the top in its detached situation

FIG. 13 c Shows a detailed enlargement of the negative structure of the Successive adjustable sliding mechanism depicted as a “dovetail guide”

FIG. 13 d Shows a detailed enlargement of the positive structure of the Successive adjustable sliding mechanism depicted as a positive structure

FIG. 14 a Shows the Successive version of the Adjustable Mandibular Advancement Device top view in a oblique perspective in its Maximum elongated position with visible platforms for the engagement of one part of the Velcro system. Note that the platform can also be used as one part of a gluing surface

FIG. 14 b Shows the Successive version of the Adjustable Mandibular

Advancement Device bottom view in its Maximum elongated position. Note that the platform connecting the two members can also be one part of a gluing surface

FIG. 14 c Shows the Successive version of the Adjustable Mandibular Advancement Device top view in a oblique perspective in its detached position with visible platforms for the engagement of one part of the Velcro system or a glue

FIG. 14 d Shows the Successive version of the Adjustable Mandibular Advancement Device bottom view in a oblique perspective in its detached position with visible platforms for the engagement of one part of the Velcro system or a glue

FIG. 14 e Shows enlarged detail of one part of the connecting platforms on either upper mandibular or lower mandibular to engage with its corresponding counterpart by Velcro system or a glue

FIG. 14 f Shows enlarged illustration of the other part of the connecting platforms on either upper mandibular or lower mandibular to engage with its corresponding counterpart by Velcro system or a glue

FIG. 15 a Shows the heat applicable rod tool with its discoid handle and its pin in an oblique projection from above

FIG. 15 b Shows the two parts of the heat applicable rod tool separated

FIG. 15 c Shows the heat applicable rod tool with its handle and its pin from above, the A-A section describes in FIG. 15 d

FIG. 15 d Shows the heat applicable in cross section from FIG. 15 c in which the embedded rod is enclosed by the handle material.

FIG. 16 Shows a diagrammatic representation of the limitations of the movements of the lower jaw in any direction in the sagital plane where PCP stands for the most protruded contact point of the teeth, IC stands for intercuspidal position (the maximal closing point), RCP stands for the most retracted contact position for the teeth, and MOP stands for the maximal opening point. 

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 42. An incremental mandibular advancement anti-snoring and obstructive sleep apnea preventing device for a human, the human having an upper jaw and a lower jaw, the upper jaw supporting a maxillary dentition, the lower jaw supporting a mandibulary dentition, the human having a nasopharynx, a oropharynx and a hypopharynx defining a airway passage, the device comprising; an upper member adapted to engage the maxillary dentition of the human; a lower member adapted to engage the mandibulary dentition of the human; a first resilient hinge and a second resilient hinge coupling said upper member and said lower member for allowing physiological movements of the lower jaw in the sagital plane; said first resilient hinge having a first incrementally adjustment member; said second resilient hinge having a second incrementally adjustment member; said first incrementally adjustment member and said second incrementally adjustment member allowing incrementally adjustments of said upper member relative to said lower member; and said incrementally adjustments defining multiple retaining forward positions of the lower jaw relative to the upper jaw and thereby keeping the airway passage in the nasopharynx, the oropharynx and the hypopharynx substantially free of occlusion.
 43. An incremental mandibular advancement anti-snoring and obstructive sleep apnea preventing device as set forth in claim 42, wherein said first incrementally adjustment member and said second incrementally adjustment member are embedded in said upper member and said lower member.
 44. An incremental mandibular advancement anti-snoring and obstructive sleep apnea preventing device as set forth in claim 42, wherein said first incrementally adjustment member and said second incrementally adjustment member are embedded in said lower member.
 45. An incremental mandibular advancement anti-snoring and obstructive sleep apnea preventing device as set forth in claim 42, wherein said first incrementally adjustment member and said second incrementally adjustment member are embedded in said upper member.
 46. An incremental mandibular advancement anti-snoring and obstructive sleep apnea preventing device as set forth in claim 42, wherein said first incrementally adjustment member and said second incrementally adjustment member include multiple stepwise snap-on snap-off members.
 47. An incremental mandibular advancement anti-snoring and obstructive sleep apnea preventing device as set forth in claim 46, wherein said multiple stepwise snap-on snap-off members include a male prong and a female aperture.
 48. An incremental mandibular advancement anti-snoring and obstructive sleep apnea preventing device as set forth in claim 47, wherein said male prong having a cross-section shape selected from the group consisting of a circle, square and a hexagon; and said female prong having an aperture shape selected from the group consisting of a circle, square and a hexagon.
 49. An incremental mandibular advancement anti-snoring and obstructive sleep apnea preventing device as set forth in claim 42, wherein said first incrementally adjustment member and said second incrementally adjustment member include hook and loop members.
 50. An incremental mandibular advancement anti-snoring and obstructive sleep apnea preventing device as set forth in claim 46, wherein said hook and loop members selected from the group consisting of a microscopic size, a mesoscopic size and a macroscopic size.
 51. An incremental mandibular advancement anti-snoring and obstructive sleep apnea preventing device as set forth in claim 42, wherein said first incrementally adjustment member and said second incrementally adjustment member include telescopic system having a cylinder member and a rod member.
 52. An incremental mandibular advancement anti-snoring and obstructive sleep apnea preventing device as set forth in claim 51, wherein said cylinder member having a cross-section shape selected from the group consisting of a square, a rectangle and a dovetail; and said rod member having a cross-section shape selected from the group consisting of a square, a rectangle and a dovetail.
 53. An incremental mandibular advancement anti-snoring and obstructive sleep apnea preventing device as set forth in claim 42, wherein said upper member has an anterior wall adapted to be in contact with the facial surfaces of the incisors, canines and premolars of the upper jaw; and said lower member has a posterior wall adapted to he in contact with the lingual surfaces of the incisors, canines and premolars of the lower jaw.
 54. An incremental mandibular advancement anti-snoring and obstructive sleep apnea preventing device as set forth in claim 42, wherein said upper member has a ellipsoid shape substantially in accordance with the normal dentition of a human; and said lower member has a parabola shape substantially in accordance with the human dentition.
 55. An incremental mandibular advancement anti-snoring and obstructive sleep apnea preventing device as set forth in claim 42, wherein said upper member, said lower member, said first resilient hinge and said second resilient hinge are constructed of a resilient non-toxic plastics material selected from the group consisting of a polyvinyl material, a polyethylene material and a polypropolene material.
 56. An incremental mandibular advancement anti-snoring and obstructive sleep apnea preventing device as set forth in claim 42, wherein said upper member, said lower member, said first resilient hinge and said second resilient hinge are constructed of a resilient non-toxic plastics material including a then thermoplastic material which can be shaped to adapt to an individual dentition by moderate heating.
 57. An incremental mandibular advancement anti-snoring and obstructive sleep apnea preventing device as set forth in claim 42, further including a temperature indicator coupled to said upper member, said lower member, said first resilient hinge or said second resilient hinge for indicating the temperature change to an elevated temperature at which the material can be shaped.
 58. An incremental mandibular advancement anti-snoring and obstructive sleep apnea preventing device for a human, the human having an upper jaw and a lower jaw, the upper jaw supporting a maxillary dentition, the lower jaw supporting a mandibulary dentition, the human having a nasopharynx, a oropharynx and a hypopharynx defining a airway passage, the device comprising; an upper member adapted to engage the maxillary dentition of the human; a lower member adapted to engage the mandibulary dentition of the human; a first resilient hinge and a second resilient, hinge coupling said upper member and said lower member for allowing physiological movements of the lower jaw in the sagital plane; said first resilient hinge having a first incrementally adjustment member; said second resilient hinge having a second incrementally adjustment member; said first incrementally adjustment member and said second incrementally adjustment member allowing incrementally adjustments of said upper member relative to said lower member; and said incrementally adjustments defining multiple retaining forward positions of the lower jaw relative to the upper jaw and the lower jaw in the position corresponding to the area between an intercuspidal position, a protruded contact position, and a maximum opening point of the jaw and thereby keeping the airway passage in the nasopharynx, the oropharynx and the hypopharynx substantially free of occlusion.
 59. An incremental mandibular advancement anti-snoring and obstructive sleep apnea preventing device as set forth in claim 58, wherein said upper member, said lower member, said first resilient hinge and said second resilient hinge are adapted to keep the lower jaw substantially in the position corresponding to the anterior border of the physiological space of movement of the lower jaw as limited by the anatomical structures in the temporo mandibular joint.
 60. An incremental mandibular advancement anti-snoring and obstructive sleep apnea preventing device as set forth in claim 58, wherein said multiple retaining forward positions are in the range of 5 to 13 mm in the sagital plane and 6 to 35 mm in the vertical plane along the border of the IP-MOP curve.
 61. An incremental mandibular advancement anti-snoring and obstructive sleep apnea preventing device for a human, the human having an upper jaw and a lower jaw, the upper jaw supporting a maxillary dentition, the lower jaw supporting a mandibulary dentition, the human having a nasopharynx, a oropharynx and a hypopharynx defining a airway passage, the device comprising; an upper member adapted to engage the maxillary dentition of the human; a lower member adapted to engage the mandibulary dentition of the human; a first resilient hinge and a second resilient hinge coupling said upper member and said lower member for allowing physiological movements of the lower jaw in the sagital plane; said first resilient hinge having a first incrementally adjustment member; said second resilient hinge having a second incrementally adjustment member; said first incrementally adjustment member and said second incrementally adjustment member allowing incrementally adjustments of said upper member relative to said lower member; said incrementally adjustments defining multiple retaining forward positions of the lower jaw relative to the upper jaw and thereby keeping the airway passage in the nasopharynx, the oropharynx and the hypopharynx substantially free of occlusion; said first incrementally adjustment member and said second incrementally adjustment member include multiple stepwise snap-on snap-off members; said multiple stepwise snap-on snap-off members include a male prong and a female aperture; said male prong having a cross-section shape selected from the group consisting of a circle, square and a hexagon; and said female prong having an aperture shape selected from the group consisting of a circle, square and a hexagon. 